// jQuery.imgAutoSize.js
// Tang Bin - http://planeArt.cn/ - MIT Licensed
(function ($) {
	
	var loadImg = function (url, fn) {
		var img = new Image();
		img.src = url;
		if (img.complete) {
			fn.call(img);
		} else {
			img.onload = function () {
				fn.call(img);
				img.onload = null;
			};
		};
	};
	
	$.fn.imgAutoSize = function (padding) {
		var maxWidth = this.innerWidth() - (padding || 0);
		return this.find('img').each(function (i, img) {
			loadImg(this.src, function () {
				if (this.width > maxWidth) {
					var height = maxWidth / this.width * this.height,
						width = maxWidth;
					
					img.width = width;
					img.height = height;
				};
			});
		});
	};
	
})(jQuery);